import java.util.Scanner;

/**
   Reads a string and prints out all vowels contained in that string.
   Vowels are A E I O U a e i o u. 

   Input: the value of s, a string
   Output: a string containing all the vowels in s,
      in the order in which they appear in s
*/
public class GetVowels
{
   public static void main(String[] args)
   {
      Scanner in = new Scanner(System.in);
      String s = in.nextLine();
      // your work here
      for (int i = 0 ; i < s.length() ; i++)
      {
         char m;
         m=s.charAt(i);
         if(m=='a'||m=='e'||m=='i'||m=='o'||m=='u'||m=='A'||m=='E'||m=='I'||m=='O'||m=='U')
         {
            System.out.print(m);
         } 
      }
   }
}